If there was any reason to be excited for Reigns/Lesnar, then it would be for the fact it will finally end Lesnar's horrendous title run.
First off, Lesnar is stale as fuck. I don't get why anyone would care about him. And while Reigns may be stale too, at least he puts on entertaining matches. Lesnar's work-rate sucks. They throw him in multi-man matches and they are, for the most part, literally the same each time.
1. Lesnar goes on a rampage early
2. Lesnar goes through a table
3. Lesnar recovers, wins match
His singles matches, outside of the one time he faced the best wrestler in the company and maybe in the world (A.J. Styles), are often massive disappointments that are equally as repetitive.